High-voltage cable digital twin model construction method and related device

Abstract

The invention provides a high-voltage cable digital twin model construction method and a related device, and the construction method comprises the steps: obtaining the structure information of a high-voltage cable, and constructing a three-dimensional model of the high-voltage cable based on the structure information; adding a predetermined signal source and a load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable; and correcting response and transmission characteristics of the high-voltage cable through comparison of the two-dimensional model and the three-dimensional model of the high-voltage cable. According to the embodiment of the invention, the dynamic behavior and response characteristics of the cable system are better obtained through cable modeling, so that the design and optimization efficiency of the cable system is improved, and meanwhile, the modeling software is integrated with other tools, so that the modeling and simulation capabilities of the cable system are further expanded.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cable model construction, and in particular, to a method for constructing a digital twin model of a high-voltage cable and related devices. Background Art

[0002] High-voltage power cables are an important part of the power system, and their reliability is closely related to the stability of the power system. Due to the excellent mechanical and electrical properties and high melting point of cross-linked polyethylene (XLPE), XLPE cables have completely replaced oil-paper cables at voltage levels of 1 to 500 kV. According to statistics, the cable buffer layer ablation failure makes the design service life of the cable far lower than the normal life. At present, accurate assessment of the aging state of cable insulation is an important means to prevent power accidents. However, due to the different sensitivity of cable aging to various characteristic quantities such as DC conductivity, dielectric loss factor, and unit depolarization charge, the high-voltage cable is an opaque whole and cannot be opened at will after being cabled. It is difficult to embed various sensor devices in it to observe and detect its fault evolution process under the influence of external electric field, moisture intrusion, electrochemical corrosion and other factors. Summary of the invention

[0003] In view of this, the present disclosure aims to provide a method for constructing a digital twin model of a high-voltage cable and related devices to solve the above-mentioned technical problems in the prior art, and can perform relevant analysis and verification on the test and characterization results of the materials and structures of each layer of the cable at the beginning of the cable design for cable conditions and unexpected situations.

[0004] One aspect of the present disclosure provides a method for constructing a digital twin model of a high-voltage cable, comprising: obtaining structural information of the high-voltage cable, and constructing a three-dimensional model of the high-voltage cable based on the structural information; adding predetermined signal sources and loads based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable; and correcting the response and transmission characteristics of the high-voltage cable by comparing the two-dimensional model of the high-voltage cable with the three-dimensional model.

[0005] In some embodiments, the method of obtaining structural information of the high-voltage cable and constructing a three-dimensional model of the high-voltage cable based on the structural information includes: separately constructing a cable core model located in the center and an armor model surrounding the cable core and twisting the cable core model and the armor model based on a predetermined method to form a three-dimensional model; configuring a transmission line module in the three-dimensional model; and configuring input and output ports based on the transmission line module.

[0006] In some embodiments, before separately constructing a cable core model located at the center and an armor model surrounding the cable core and twisting the cable core model and the armor model based on a predetermined method to form a three-dimensional model, it also includes: using modeling software to create a new model file and determine the directions and reference points of the three axes X, Y, and Z to establish a modeling coordinate system.

[0007] In some embodiments, the obtaining of structural information of the high-voltage cable and constructing a three-dimensional model of the high-voltage cable based on the structural information also includes: configuring modeling parameters of the cable, wherein the modeling parameters include at least the amount of core wire insulation material, braiding rate, winding shielding rate, and number of winding copper wires.

[0008] In some embodiments, the obtaining of structural information of the high-voltage cable and the building of a three-dimensional model of the high-voltage cable based on the structural information include at least the length, diameter, aluminum sheath thickness and buffer layer thickness of the high-voltage cable.

[0009] In some embodiments, the adding of predetermined signal sources and loads based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable includes: adding appropriate signal sources and loads based on the configured input and output ports to dynamically simulate the input and output of the high-voltage cable; adding predetermined modules to obtain the response and transmission characteristics of the high-voltage cable.

[0010] In some embodiments, the comparison between the two-dimensional model and the three-dimensional model of the high-voltage cable to correct the response and transmission characteristics of the high-voltage cable includes: separately constructing a two-dimensional model of the high-voltage cable in the horizontal direction and a two-dimensional model of the high-voltage cable in the vertical direction, wherein the two-dimensional model is constructed based on the three-dimensional model; correction of the response and transmission characteristics of the high-voltage cable can be achieved through the two-dimensional model and the three-dimensional model.

[0011] Another aspect of the present disclosure provides a device for constructing a digital twin model of a high-voltage cable, including: a construction module, used to obtain structural information of the high-voltage cable, and construct a three-dimensional model of the high-voltage cable based on the structural information; a characteristic acquisition module, used to add predetermined signal sources and loads based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable; and a correction module, used to correct the response and transmission characteristics of the high-voltage cable by comparing the two-dimensional model of the high-voltage cable with the three-dimensional model.

[0012] Another aspect of an embodiment of the present disclosure provides a storage medium storing a computer program, wherein the computer program implements the steps of any of the above methods when executed by a processor.

[0013] Another aspect of an embodiment of the present disclosure provides an electronic device, comprising at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any of the above methods when executing the computer program on the memory.

[0014] The disclosed embodiments use cable modeling to better obtain the dynamic behavior and response characteristics of the cable system, thereby improving the design and optimization efficiency of the cable system, and at the same time integrate the modeling software with other tools to further expand the modeling and simulation capabilities of the cable system.

[0015] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0017] Figure 1 This is a schematic diagram of the steps of the method for constructing a digital twin model of a high-voltage cable provided in an embodiment of the present disclosure;

[0018] Figure 2 This is the second schematic diagram of the steps of the method for constructing a digital twin model of a high-voltage cable provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0019] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but are not intended to limit the present disclosure.

[0020] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0022] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0023] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0024] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0025] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0027] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0028] The first embodiment of the present disclosure provides a method for constructing a digital twin model of a high-voltage cable. Figure 1 As shown, the specific steps include the following:

[0029] S101, acquiring structural information of a high-voltage cable, and constructing a three-dimensional model of the high-voltage cable based on the structural information.

[0030] In this step, the structural information of the high-voltage cable is obtained, and a three-dimensional model of the high-voltage cable is constructed based on the structural information. Specifically, various data of the real high-voltage cable are collected based on the requirements of three-dimensional modeling to obtain the structural information of the high-voltage cable. Specifically, for example, structural information such as the length, diameter, aluminum sheath thickness, and buffer layer thickness of the high-voltage cable are collected. Then, based on the collected structural information, a three-dimensional model of the high-voltage cable is constructed through modeling software. By having a certain understanding of the physical properties of the cable and collecting real high-voltage cable data, the accuracy of the model is guaranteed to a certain extent. Sufficient testing and debugging are performed when the model is established to ensure the accuracy and reliability of the model.

[0031] Specifically, the structural information of the high-voltage cable is obtained, and a three-dimensional model of the high-voltage cable is constructed based on the structural information, such as Figure 2 As shown, including:

[0032] S201, constructing a cable core model located at the center and an armor model surrounding the cable core respectively, and twisting the cable core model and the armor model based on a predetermined method to form a three-dimensional model.

[0033] Before this step, the coordinate system for modeling needs to be determined. Specifically, a new model file is created using modeling software and the directions and reference points of the three axes X, Y, and Z are determined to establish the coordinate system for modeling, so that the spatial position of the model can be located to facilitate the establishment of a new model.

[0034] In this step, a cable core model located at the center and an armor model surrounding the cable core are constructed, and the cable core model and the armor model are twisted based on a predetermined method to form a three-dimensional model. In the modeling process, the cable core model located at the center and the armor model are constructed separately. Specifically, an effective and powerful meshing strategy is set in the modeling process of the armor model, wherein a highly anisotropic and well-structured swept mesh that is the same as the actual armor is used for meshing. In addition, in the area between the cable core model and the armor model where the swept mesh cannot be applied, an unstructured free tetrahedral mesh is used for modeling.

[0035] Specifically, since three phases generally require the addition of three cables, the modeling software is used to create a Cableinterface first. The electrical connection option can be selected according to the cable layout in CableCross-Sections. Double-click the newly created cable to enter the editing option, click the mouse and add a cable. It should be noted that the geometric positions of the three cables cannot overlap at the same time, and the value numbers 1, 2, and 3 can be set as required.

[0036] Furthermore, in the process of constructing the three-dimensional model, through the union in the "Boolean operation and partitioning" of the modeling software, all the geometric parts are selected on the graph, and whether to retain the "internal boundary" is selected. Finally, the construction is selected, and holes are dug in the constructed high-voltage cable model through the difference.

[0037] Further, based on the constructed model, the cable core model and the armor model are twisted in a predetermined manner, which causes the cable environment to be twisted, and the degree of freedom can be greatly reduced. Among them, the spiral conductor is created using the geometry sequence of the modeling software, and the domain and boundary are processed using filters, which can greatly simplify the complexity of the model. In addition, in order to obtain the best accuracy with the least amount of calculation, a geometry correction factor can also be used when setting the geometry sequence.

[0038] In this step, in order to achieve the simulation of high-voltage cables with different levels including torsion, it is necessary to have the correct periodicity, and the periodic length of the high-voltage cable depends on the laying length of the phase and armor, but the periodicity is not a straight line projection from one periodic plane to another. When the behavior of the cable changes, the magnetic flux will form a longitudinal component in the armor, and the induced armor current will generate small eddy currents around the center line of the armor wire. The total longitudinal current of each armor wire is suppressed to zero by torsion, but the current will not be locally restricted, so that the current will flow in the positive longitudinal direction inside the armor (where the phase and shield are located) and return outside (where the phase electromotive force is weak), and the circular eddy current can only be seen in three-dimensional mode.

[0039] Furthermore, constructing a high-voltage cable model with distributed parameter effects requires a certain understanding of the physical properties of the cable and requires experiments. The accuracy of the model also depends on the accuracy of the parameters and the complexity of the model. When establishing the model, sufficient testing and debugging are required to ensure the accuracy and reliability of the model.

[0040] In addition, this step also includes: configuring the structural parameters of the cable, such as configuring the cable length and transmission speed and other parameters. Cable modeling can help to better understand the dynamic behavior and response characteristics of the high-voltage cable, thereby improving the design and optimization efficiency of the high-voltage cable. At the same time, the modeling software is integrated with other tools such as Matlab and Sim Power Systems to further expand the modeling and simulation capabilities of the high-voltage cable.

[0041] For example, in the process of constructing the cable core model, it is also necessary to match a plurality of predetermined structural parameters. For example, the amount of core wire insulation material is calculated by the following formula:

[0042] M = (D2-d2n) × 0.7854 × p;

[0043] Among them, M is the amount of core material required per kilometer (unit: kg); D is the core diameter (unit: mm); d is the diameter of a single conductor (unit: mm); n is the number of stranded conductors; P is the density of the material used;

[0044] For another example, the braiding rate is calculated by the following formula:

[0045] Tgθ=[2π(D+2d)p] / 25.4C;

[0046]

[0047] ρ=(2F-F 2 )100%;

[0048] Wherein, θ represents the braiding angle; D represents the inner wire diameter of the braiding wire; d represents the braiding wire diameter; P represents the mesh number; C represents the number of spindles; N represents the number of strands per spindle;

[0049] For another example, the winding shielding rate is calculated by the following formula:

[0050]

[0051] Wherein, α represents the braiding angle; D represents the inner wire diameter of the winding; d represents the diameter of the winding wire; P represents the mesh number;

[0052] For another example, the relevant parameters of the winding shield are calculated by the following formula:

[0053] Calculation of the number of winding copper lines: N = [(D + d) * π] / d. The above N is the number of copper lines when the shielding rate is 100%;

[0054] Shielding rate: ρ = (the actual number of wound copper wires) / N * 100%.

[0055] Where, D is the inner diameter of the winding wire; d is the diameter of the winding wire.

[0056] S202: configuring a transmission line module in the three-dimensional model.

[0057] After respectively constructing a cable core model located at the center and an armor model surrounding the cable core in the above step S201 and twisting the cable core model and the armor model based on a predetermined method to form a three-dimensional model, in this step, a transmission line module is configured in the three-dimensional model. Specifically, a Transmission Line module is added to the constructed three-dimensional model to represent the transmission line of the cable.

[0058] S203: Configure input and output ports based on the transmission line module.

[0059] After configuring the transmission line module in the three-dimensional model through the above step S202, in this step, the input and output ports are configured based on the transmission line module and predetermined signal sources and loads are added to simulate the transmission process of the cable. Specifically, the transmission process of the high-voltage cable is simulated by connecting the input and output ports of the Transmission Line module. In this step, standard software function blocks are used to establish the input and output ports of the cable, and of course other elements of the high-voltage cable.

[0060] S102: adding a predetermined signal source and a load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable.

[0061] After obtaining the structural information of the high-voltage cable through the above step S101 and building a three-dimensional model of the high-voltage cable based on the structural information, in this step, a predetermined signal source and load are added based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the cable. Specifically, after configuring the input and output ports, appropriate signal sources and loads can be added to dynamically simulate the input and output of the high-voltage cable, such as using a signal source block to simulate the input signal of the cable.

[0062] In addition, a predetermined module can be added to obtain the response and transmission characteristics of the high-voltage cable. For example, resistance, capacitance and inductance blocks are used to simulate the impedance and transmission characteristics of the high-voltage cable. For example, the performance parameters of the high-voltage cable can be preset, and the performance parameters here include resistance, inductance and capacitance, etc.; an oscilloscope block can also be used to monitor the output signal of the high-voltage cable, so as to obtain the transmission characteristics of the high-voltage cable.

[0063] In a transmission characteristic embodiment, a conductivity curve diagram of a preset resistance changing with temperature can be made by calculating data. This diagram can show the effect of temperature on the cable phase and shielding loss. When electromagnetic heat is added (excluding temperature-dependent conductivity), the high-voltage cable heats up, but the electromagnetic characteristics remain unchanged. When linear resistivity is applied to the phase, the phase loss increases, but the shielding loss does not increase. The conductivity here may be one of the material properties with the largest natural value range. The conductivity of cross-linked polyethylene in the cable is about 1e-18S / m, while the conductivity of copper is about 6e+7S / m, with a contrast of 6e+25S / m. In order to maintain the numerical stability of the model, the insulator is artificially specified to be 40-55S / m.

[0064] S103, correcting the response and transmission characteristics of the high voltage cable by comparing the two-dimensional model of the high voltage cable with the three-dimensional model.

[0065] After adding predetermined signal sources and loads based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable through the above-mentioned step S102, in this step, the response and transmission characteristics of the high-voltage cable are corrected by comparing the two-dimensional model of the high-voltage cable with the three-dimensional model.

[0066] Specifically, a two-dimensional model of the high-voltage cable in the horizontal direction and a two-dimensional model of the high-voltage cable in the vertical direction are respectively constructed for comparison and reference; since the two-dimensional model cannot capture the phases and armor that are twisted in different directions to obtain torsional stability, resulting in complex interactions between the phases, shielding layers, and armor, the construction of the two-dimensional model of the high-voltage cable must be based on the three-dimensional model.

[0067] In this step, the response and transmission characteristics of the high-voltage cable can be corrected by the two-dimensional model and the three-dimensional model. For example, thermal effect is an important part of high-voltage cable simulation, and the material properties of high-voltage cable are related to temperature. An effective method for dealing with three-dimensional thermal effects is to obtain temperature from the two-dimensional thermal model and use these temperatures to specify the temperature-related material properties in the three-dimensional model, that is, first-order temperature correction, by calculating the average phase, shielding layer and armor loss of the three-dimensional model and using them as heat sources in the two-dimensional thermal model, using the average phase, shielding layer and armor temperature to update the material properties in the three-dimensional model, and realizing the material property and temperature change curve data of the high-voltage cable.

[0068] In another embodiment, the anisotropy of the high-voltage cable may also be corrected. Anisotropy here means that all or part of the chemical, physical and other properties of a substance change with the change of direction, and exhibit different properties in different directions.

[0069] In addition, since the geometric details in the insulation domain have little effect on the inductor properties, they are replaced with a single homogeneous insulating material throughout the body, but their geometric details are retained.

[0070] The disclosed embodiments use cable modeling to better obtain the dynamic behavior and response characteristics of the cable system, thereby improving the design and optimization efficiency of the cable system, and at the same time integrate the modeling software with other tools to further expand the modeling and simulation capabilities of the cable system.

[0071] Based on the same inventive concept as the first embodiment above, the second embodiment of the present disclosure provides a high-voltage cable digital twin model building device, comprising:

[0072] A construction module, used to obtain structural information of the high-voltage cable and construct a three-dimensional model of the high-voltage cable based on the structural information;

[0073] A characteristic acquisition module, used for adding a predetermined signal source and load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable;

[0074] A correction module is used to correct the response and transmission characteristics of the high-voltage cable by comparing the two-dimensional model of the high-voltage cable with the three-dimensional model.

[0075] Furthermore, the building block includes:

[0076] A construction unit, used to respectively construct a cable core model located at the center and an armor model surrounding the cable core, and twist the cable core model and the armor model based on a predetermined method to form a three-dimensional model;

[0077] A first configuration unit, configured to configure a transmission line module in the three-dimensional model;

[0078] A second configuration unit is used to configure input and output ports based on the transmission line module.

[0079] Furthermore, the construction module is also used to create a new model file using modeling software and determine the directions and reference points of the three axes X, Y, and Z to establish a modeling coordinate system.

[0080] Furthermore, the building block further includes:

[0081] The third configuration unit is used to configure the modeling parameters of the cable, and the modeling parameters at least include the amount of core wire insulation material, braiding rate, winding shielding rate, and the number of winding copper wires.

[0082] Furthermore, the structural information includes at least the length, diameter, aluminum sheath thickness and buffer layer thickness of the high-voltage cable.

[0083] Furthermore, the characteristic acquisition module includes:

[0084] A simulation unit, used to add appropriate signal sources and loads based on the configured input and output ports to dynamically simulate the input and output of the high-voltage cable;

[0085] An acquisition unit is used to add a predetermined module to acquire the response and transmission characteristics of the high voltage cable.

[0086] Furthermore, the correction module includes:

[0087] A construction unit, which constructs a two-dimensional model of the high-voltage cable in a horizontal direction and a two-dimensional model of the high-voltage cable in a vertical direction, respectively, wherein the two-dimensional model is constructed based on the three-dimensional model;

[0088] A correction unit is used to correct the response and transmission characteristics of the high-voltage cable through the two-dimensional model and the three-dimensional model.

[0089] The disclosed embodiments use cable modeling to better obtain the dynamic behavior and response characteristics of the cable system, thereby improving the design and optimization efficiency of the cable system, and at the same time integrate the modeling software with other tools to further expand the modeling and simulation capabilities of the cable system.

[0090] A third embodiment of the present disclosure provides a storage medium storing a computer program. When the computer program is executed by a processor, the steps of implementing the above method include:

[0091] S11, acquiring structural information of the high-voltage cable, and constructing a three-dimensional model of the high-voltage cable based on the structural information;

[0092] S12, adding a predetermined signal source and load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable;

[0093] S13, correcting the response and transmission characteristics of the high voltage cable by comparing the two-dimensional model of the high voltage cable with the three-dimensional model.

[0094] Of course, other steps of the control method can also be used to implement the above embodiment.

[0095] The disclosed embodiments use cable modeling to better obtain the dynamic behavior and response characteristics of the cable system, thereby improving the design and optimization efficiency of the cable system, and at the same time integrate the modeling software with other tools to further expand the modeling and simulation capabilities of the cable system.

[0096] A fourth embodiment of the present disclosure provides an electronic device, the electronic device comprising at least a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the above method when executing the computer program on the memory, specifically comprising:

[0097] S21, acquiring structural information of the high-voltage cable, and constructing a three-dimensional model of the high-voltage cable based on the structural information;

[0098] S22, adding a predetermined signal source and load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable;

[0099] S23, correcting the response and transmission characteristics of the high voltage cable by comparing the two-dimensional model of the high voltage cable with the three-dimensional model.

[0100] The disclosed embodiments use cable modeling to better obtain the dynamic behavior and response characteristics of the cable system, thereby improving the design and optimization efficiency of the cable system, and at the same time integrate the modeling software with other tools to further expand the modeling and simulation capabilities of the cable system.

[0101] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0102] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0103] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0104] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0105] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0106] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0107] If the integrated module is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned motor torque control method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0108] In addition, the features of the embodiments shown in the drawings of the present application or the various embodiments mentioned in this specification are not necessarily understood as independent embodiments. Instead, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments to produce other embodiments not described in words or with reference to the drawings.

[0109] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for constructing a digital twin model of a high-voltage cable, characterized in that: include: Acquiring structural information of the high-voltage cable, and constructing a three-dimensional model of the high-voltage cable based on the structural information; Adding a predetermined signal source and a load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable; The response and transmission characteristics of the high voltage cable are modified by comparing the two-dimensional model of the high voltage cable with the three-dimensional model.

2. The method for constructing a high-voltage cable digital twin model according to claim 1, characterized in that: The step of acquiring structural information of the high-voltage cable and constructing a three-dimensional model of the high-voltage cable based on the structural information includes: Respectively constructing a cable core model located at the center and an armor model surrounding the cable core, and twisting the cable core model and the armor model based on a predetermined method to form a three-dimensional model; configuring a transmission line module in the three-dimensional model; Input and output ports are configured based on the transmission line module.

3. The method for constructing a digital twin model of a high-voltage cable according to claim 2, characterized in that: Before respectively constructing a cable core model located at the center and an armor model surrounding the cable core and twisting the cable core model and the armor model based on a predetermined method to form a three-dimensional model, it also includes: using modeling software to create a new model file and determine the directions and reference points of the three axes X, Y, and Z to establish a modeling coordinate system.

4. The method for constructing a high-voltage cable digital twin model according to claim 1, characterized in that: The step of acquiring structural information of the high-voltage cable and constructing a three-dimensional model of the high-voltage cable based on the structural information further includes: The modeling parameters of the cable are configured, wherein the modeling parameters include at least the amount of core wire insulation material, the braiding rate, the winding shielding rate, and the number of winding copper wires.

5. The method for constructing a high-voltage cable digital twin model according to claim 1, characterized in that: The obtaining of structural information of the high-voltage cable and the building of a three-dimensional model of the high-voltage cable based on the structural information, wherein the structural information at least includes the length, diameter, aluminum sheath thickness and buffer layer thickness of the high-voltage cable.

6. The method for constructing a high-voltage cable digital twin model according to claim 1, characterized in that: The adding of a predetermined signal source and a load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable includes: Based on the configured input and output ports, add appropriate signal sources and loads to dynamically simulate the input and output of the high voltage cable; Predetermined modules are added to obtain the response and transmission characteristics of the high voltage cable.

7. The method for constructing a high-voltage cable digital twin model according to claim 1, characterized in that: The step of correcting the response and transmission characteristics of the high voltage cable by comparing the two-dimensional model of the high voltage cable with the three-dimensional model includes: Respectively constructing a two-dimensional model of the high-voltage cable in the horizontal direction and a two-dimensional model of the high-voltage cable in the vertical direction, wherein the two-dimensional models are constructed based on the three-dimensional model; The two-dimensional model and the three-dimensional model enable correction of the response and transmission characteristics of the high-voltage cable.

8. A device for constructing a digital twin model of a high-voltage cable, characterized in that: include: A construction module, used to obtain structural information of the high-voltage cable and construct a three-dimensional model of the high-voltage cable based on the structural information; A characteristic acquisition module, used for adding a predetermined signal source and load based on the three-dimensional model to simulate the transmission process of the cable to obtain the response and transmission characteristics of the high-voltage cable; A correction module is used to correct the response and transmission characteristics of the high-voltage cable by comparing the two-dimensional model of the high-voltage cable with the three-dimensional model.

9. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. An electronic device, comprising at least a memory and a processor, wherein a computer program is stored in the memory, wherein: The processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program on the memory.

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